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Home >> Ford >> 2011 >> RV Cutaway 5.4 L >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission External Controls >> Description And Operation >> External Controls >> Brake Shift Interlock System
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Brake Shift Interlock System

The brake shift interlock system prevents the selector lever from being shifted from the PARK position unless the brake pedal is applied. The brake shift interlock system consists of a Brake Shift Interlock Actuator (BSIA) mounted on the steering column tube. When the ignition switch is in the RUN position, the BSIA  solenoid is off until the brake pedal is applied.